I have been getting a clicking noise for the last hundred miles or so, once every pedal revolution. I initially thought it to be caused by a pedal. Today I had time to investigate it properly and I think it is the bottom bracket: With the cranks and spindle removed I can feel that there is a little bit of play in the bottom bracket on the drive side.
I have Shimano 105 5700 BB cups:
As they are available at an affordable price, I am ready to replace them, regardless of whether the play could be repaired or the clicking silenced.
So, that's the background, now three questions to answer if you please:
1) After 8000km and a reasonably thorough approach to cleaning/maintenence is this acceptable for a BB to need replacing.
2) is there any benefit to paying more to upgrade a BB, what can I expect from a pricier model? (I weigh 95 kgs so I'm reluctant to go for anything super-light that might not take the strain)
3)If there is a benefit to upgrading, bearing in mind that the link above states 'Required for installation of FC-5700 and FC-5703 chainset'. Does this mean that there are actually no other options out there anyway?
Cheers for your help if anyone is able to...